Introduction - If you have any usage issues, please Google them yourself
Scalar nonlinear system extended Kalman filtering problem
State function: X (k+ 1) 0.5 X (k)+ 2.5 X (k)/(1+ X (k) ^ 2)+ 8 cos (1.2 k)+ w (k)
Observation equation: Z (k) X (k) ^ 2/20+ v (k)